Advance your career with help from our practice exams

Communication: FOURTH PERIOD

A randomized 25 question test from a pool of 761 questions, good luck!
In the protocol specifications of Modbus, there are only four types of registers that can be accessed by the master. Which of the terms below is best described as a analog input memory location?
There are many different software programs that are commonly used by a DCS. Which of the programs below would allow the control of an employees access level in the system?
Which of the messaging methods is best described as one that can only be initiated by the link master in the H1 transmission system?
The various DCS networks are vital to any plant or process operating smoothly. Which of the networks below must faster and more reliable than any of the others?
There are numerous function block modes which are permitted. Which of the modes below is best described as the mode the function block desires to be in?
In the protocol specifications of Modbus, there are only four types of registers that can be accessed by the master. Which of the terms below is best described as a discreet input memory location?
Which of the answers below best describes the OSI layers that a Foundation fieldbus H1is not compliant with?
In a typical GUI, values take one of four generic indicators. Which of the indicators below would best used where discrete data needs to be provided, but a simple colour change will suffice?
In each OSI layer, each device must be identified to be used. In which of the layers below does the physical address of each network device reside?
In a DCS, there is a controller scan cycle priority that should have enough time to execute all tasks. Which of the answers below represents the about of free time for a loaded DCS controller to function?
display resolution determines the graphic flexibility of the HMI hardware to be moved to different GUIs? which of the aspect ratios below would be most commonly used for a display?
The standard recommended by ISA-18.2 is for 3-4 priority level alarms to be used. Which of the alarm priority levels below can best be described as the highest level alarm, demanding prompt operator action?
Modbus has standard command codes to allow the master to access information from it's slaves. Which of the commands below would be used to write the contents of a series of 10 coils to the slave device?
IPv4 network classes can also be defined by the IP address they use. Which of the answers corresponds best to the address in row "A"?
There are several different ways to let an operator know about an alarm in any HMI. Which of the answers below would best be described as a vibrations given off by a device?
The quality of a OUT parameter status field has several different classifications. Which of the classifications below can be described as the block supports a cascade path and the value quality is good?
IPv4 network classes can also be defined by the IP address they use. Which of the answers corresponds best to the address in row "I"?
Data communication in a DCS takes the form of various net works. Which of the networks below connects to servers that share business data?
The biggest register that Modbus supports is 16-bit. Which of the terms below is used for the process to support 32-bit data?
Alarm management is based upon the process conditions model. Which of the conditions in that model could be described as the optimal operating conditions?
Any SCADA system must adhere to universal standards which allow smooth communication over international boundaries. Which of the standards below would be responsible for integration of security measures such as encryption?
In Modbus, data is read, and written in various memory ranges. Which of the answers below best represents the data type that a input registers would use?
Digital signals are, either specific or transitory, voltage levels represent states of logic. Which of the signal encoding methods below uses the conversion of dc voltage levels to ac to represent logic states?
IPv4 network classes can also be defined by the default subnet masks that they use. If the subnet mask was 255.0.0.0, which of the classes below would be used?
In IPv4, the user datagram protocol has less latency and measurable greater data throughput. Which of the answers below can be a drawback of this protocol?